
#app{
    width: 100%;
    height: 100%;
    overflow: hidden;
    overflow-x: hidden;
    position: relative;
    // background: url(../image/bj2.png) no-repeat 0 0;
    // background-size: 100% ;
    .img-box{
        width: 100%;
        height: 100%;
        position: relative;
        img{
            width: 100%;
        }
        .QRcode{
            width: 260px;
            position: absolute;
            top: 900px;
            left: calc((100% - 250px) / 2 );
        }
    }
}